22021326264 has 192 divisors, whose sum is σ = 66253824000. Its totient is φ = 5974265088.

The previous prime is 22021326263. The next prime is 22021326307. The reversal of 22021326264 is 46262312022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021326263) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13241097 + ... + 13242759.

It is an arithmetic number, because the mean of its divisors is an integer number (345072000).

Almost surely, 2^22021326264 is an apocalyptic number.

22021326264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021326264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33126912000).

22021326264 is an abundant number, since it is smaller than the sum of its proper divisors (44232497736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021326264 is a wasteful number, since it uses less digits than its factorization.

22021326264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1874 (or 1847 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 22021326264 its reverse (46262312022), we get a palindrome (68283638286).

The spelling of 22021326264 in words is "twenty-two billion, twenty-one million, three hundred twenty-six thousand, two hundred sixty-four".